What is Node.js and NPM(Node package manager)?

This video discusses about Node.js and NPM(Node package manager).
Clean Soul - Calming by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300033
Artist: http://incompetech.com/
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